Pythonメモ > Pythonのstrptimeが遅い †性能検証 †# coding: utf-8 from datetime import datetime import time def main(): loop_num = 1000 date_text = '2018-01-01T01:02:03Z' # datetimeインスタンスを素で生成 stime = time.time() for i in range(loop_num): target_datetime = datetime(int(date_text[0:4]), int(date_text[5:7]), int(date_text[8:10]), int(date_text[11:13]), int(date_text[14:16]), int(date_text[17:19])) etime = time.time() print('datetime : {}'.format(etime - stime)) # datetime.strptime を利用 stime = time.time() for i in range(loop_num): target_datetime = datetime.strptime(date_text, '%Y-%m-%dT%H:%M:%SZ') etime = time.time() print('strptime : {}'.format(etime - stime)) if __name__ == '__main__': main() 結果 †datetime : 0.0019216537475585938 strptime : 0.014120101928710938 |